| Hangul: | 정상진 |
| Rr: | Jeong Sangjin |
| Mr: | Chŏng Sangjin |
Jung Sang-jin (born 16 April 1984 in Seoul) is a South Korean javelin thrower.
His personal best throw is 82.05 metres, achieved in June 2012 in Daejeon.
| Representing | |||||
|---|---|---|---|---|---|
| 2001 | Bandar Seri Begawan, Brunei | 4th | 68.96 m | ||
| 2002 | Kingston, Jamaica | 3rd | 73.99 m | ||
| Bangkok, Thailand | 1st | 75.36 m | |||
| 2005 | Izmir, Turkey | 17th (q) | 69.55 m | ||
| Incheon, South Korea | 2nd | 76.85 m | |||
| 2007 | Amman, Jordan | 3rd | 70.95 m | ||
| Universiade | Bangkok, Thailand | 9th | 74.22 m | ||
| 2009 | Universiade | Belgrade, Serbia | 8th | 76.15 m | |
| World Championships | Berlin, Germany | 36th (q) | 72.80 m | ||
| Asian Championships | Guangzhou, China | 7th | 73.34 m | ||
| 2010 | Guangzhou, China | 9th | 71.59 m | ||
| 2011 | Asian Championships | Kobe, Japan | 4th | 78.65 m | |
| World Championships | Daegu, South Korea | 34th (q) | 72.03 m | ||
| 2012 | Olympic Games | London, United Kingdom | 31st (q) | 76.37 m | |